Ubuntu Security Notice USN-330-1 - Tavis Ormandy discovered that the TIFF library did not sufficiently check handled images for validity. By tricking an user or an automated system into processing a specially crafted TIFF image, an attacker could exploit these weaknesses to execute arbitrary code with the target application's privileges.

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Hash: SHA1
_______________________________________________________________________
Mandriva Linux Security Advisory MDKSA-2006:137
http://www.mandriva.com/security/
_______________________________________________________________________
Package : libtiff
Date : August 1, 2006
Affected: 2006.0, Corporate 3.0, Multi Network Firewall 2.0
_______________________________________________________________________
Problem Description:
Tavis Ormandy, Google Security Team, discovered several vulnerabilites
the libtiff image processing library:
Several buffer overflows have been discovered, including a stack
buffer overflow via TIFFFetchShortPair() in tif_dirread.c, which is
used to read two unsigned shorts from the input file. While a bounds
check is performed via CheckDirCount(), no action is taken on the
result allowing a pathological tdir_count to read an arbitrary number
of unsigned shorts onto a stack buffer. (CVE-2006-3459)
A heap overflow vulnerability was discovered in the jpeg decoder,
where TIFFScanLineSize() is documented to return the size in bytes
that a subsequent call to TIFFReadScanline() would write, however the
encoded jpeg stream may disagree with these results and overrun the
buffer with more data than expected. (CVE-2006-3460)
Another heap overflow exists in the PixarLog decoder where a run
length encoded data stream may specify a stride that is not an exact
multiple of the number of samples. The result is that on the final
decode operation the destination buffer is overrun, potentially
allowing an attacker to execute arbitrary code. (CVE-2006-3461)
The NeXT RLE decoder was also vulnerable to a heap overflow
vulnerability, where no bounds checking was performed on the result of
certain RLE decoding operations. This was solved by ensuring the
number of pixels written did not exceed the size of the scanline
buffer already prepared. (CVE-2006-3462)
An infinite loop was discovered in EstimateStripByteCounts(), where a
16bit unsigned short was used to iterate over a 32bit unsigned value,
should the unsigned int (td_nstrips) have exceeded USHORT_MAX, the
loop would never terminate and continue forever. (CVE-2006-3463)
Multiple unchecked arithmetic operations were uncovered, including a
number of the range checking operations deisgned to ensure the offsets
specified in tiff directories are legitimate. These can be caused to
wrap for extreme values, bypassing sanity checks. Additionally, a
number of codepaths were uncovered where assertions did not hold true,
resulting in the client application calling abort(). (CVE-2006-3464)
A flaw was also uncovered in libtiffs custom tag support, as
documented here http://www.libtiff.org/v3.6.0.html. While well formed
tiff files must have correctly ordered directories, libtiff attempts
to support broken images that do not. However in certain
circumstances, creating anonymous fields prior to merging field
information from codec information can result in recognised fields
with unexpected values. This state results in abnormal behaviour,
crashes, or potentially arbitrary code execution. (CVE-2006-3465)
The updated packages have been patched to correct these issues.
_______________________________________________________________________
References:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-3459
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-3460
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-3461
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-3462
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-3463
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-3464
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-3465
_______________________________________________________________________
Updated Packages:
Mandriva Linux 2006.0:
c0173eb2f2d497fce68b863a6d01433e 2006.0/RPMS/libtiff3-3.6.1-12.6.20060mdk.i586.rpm
55369714ae92ea654507f33944285322 2006.0/RPMS/libtiff3-devel-3.6.1-12.6.20060mdk.i586.rpm
8303a2a5f5b98d0fe984c4f62a8849e7 2006.0/RPMS/libtiff3-static-devel-3.6.1-12.6.20060mdk.i586.rpm
898dbc11589b623cba53d4e0dea4ec6e 2006.0/RPMS/libtiff-progs-3.6.1-12.6.20060mdk.i586.rpm
1f77f216c421961825035b17e2fc3d0f 2006.0/SRPMS/libtiff-3.6.1-12.6.20060mdk.src.rpm
Mandriva Linux 2006.0/X86_64:
67217a6617c35cfa110b9199ce827c7f x86_64/2006.0/RPMS/lib64tiff3-3.6.1-12.6.20060mdk.x86_64.rpm
b5ea6efd7fcb1db40c69457de4d90980 x86_64/2006.0/RPMS/lib64tiff3-devel-3.6.1-12.6.20060mdk.x86_64.rpm
673437e87cd25febee28993cd3c9488d x86_64/2006.0/RPMS/lib64tiff3-static-devel-3.6.1-12.6.20060mdk.x86_64.rpm
c0173eb2f2d497fce68b863a6d01433e x86_64/2006.0/RPMS/libtiff3-3.6.1-12.6.20060mdk.i586.rpm
55369714ae92ea654507f33944285322 x86_64/2006.0/RPMS/libtiff3-devel-3.6.1-12.6.20060mdk.i586.rpm
8303a2a5f5b98d0fe984c4f62a8849e7 x86_64/2006.0/RPMS/libtiff3-static-devel-3.6.1-12.6.20060mdk.i586.rpm
c3a7a68b6fef5f74240a6f526412d216 x86_64/2006.0/RPMS/libtiff-progs-3.6.1-12.6.20060mdk.x86_64.rpm
1f77f216c421961825035b17e2fc3d0f x86_64/2006.0/SRPMS/libtiff-3.6.1-12.6.20060mdk.src.rpm
Corporate 3.0:
7ed65170763bdbb2db2c73a0e6d21dc5 corporate/3.0/RPMS/libtiff3-3.5.7-11.12.C30mdk.i586.rpm
c4fd193c4ac3c199f98751b615f7f5ad corporate/3.0/RPMS/libtiff3-devel-3.5.7-11.12.C30mdk.i586.rpm
2d4920c58d576d4174358a62eb533acd corporate/3.0/RPMS/libtiff3-static-devel-3.5.7-11.12.C30mdk.i586.rpm
aa07135a25873d7265dfb1a4ac1fd365 corporate/3.0/RPMS/libtiff-progs-3.5.7-11.12.C30mdk.i586.rpm
8c70315b6e8fcbfeb56abaf9df8fef52 corporate/3.0/SRPMS/libtiff-3.5.7-11.12.C30mdk.src.rpm
Corporate 3.0/X86_64:
c48326e5749da37145fe7744b2ec7da7 x86_64/corporate/3.0/RPMS/lib64tiff3-3.5.7-11.12.C30mdk.x86_64.rpm
d5a2fa2ad3de5d7a77332920eea6ccb2 x86_64/corporate/3.0/RPMS/lib64tiff3-devel-3.5.7-11.12.C30mdk.x86_64.rpm
3582b0f21935141f83bb83787ce6537a x86_64/corporate/3.0/RPMS/lib64tiff3-static-devel-3.5.7-11.12.C30mdk.x86_64.rpm
7ed65170763bdbb2db2c73a0e6d21dc5 x86_64/corporate/3.0/RPMS/libtiff3-3.5.7-11.12.C30mdk.i586.rpm
b8de80aaa29a62815ef364357c319d95 x86_64/corporate/3.0/RPMS/libtiff-progs-3.5.7-11.12.C30mdk.x86_64.rpm
8c70315b6e8fcbfeb56abaf9df8fef52 x86_64/corporate/3.0/SRPMS/libtiff-3.5.7-11.12.C30mdk.src.rpm
Multi Network Firewall 2.0:
8cc2951ca065dced86d900d2713f7755 mnf/2.0/RPMS/libtiff3-3.5.7-11.12.M20mdk.i586.rpm
20c7813342fc7964cfc3f35465232ade mnf/2.0/SRPMS/libtiff-3.5.7-11.12.M20mdk.src.rpm
_______________________________________________________________________
To upgrade automatically use MandrivaUpdate or urpmi. The verification
of md5 checksums and GPG signatures is performed automatically for you.
All packages are signed by Mandriva for security. You can obtain the
GPG public key of the Mandriva Security Team by executing:
gpg --recv-keys --keyserver pgp.mit.edu 0x22458A98
You can view other update advisories for Mandriva Linux at:
http://www.mandriva.com/security/advisories
If you want to report vulnerabilities, please contact
security_(at)_mandriva.com
_______________________________________________________________________
Type Bits/KeyID Date User ID
pub 1024D/22458A98 2000-07-10 Mandriva Security Team
<security*mandriva.com>
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SUSE Security Announcement SUSE-SA:2006:044 - This update of libtiff is the result of a source-code audit done by Tavis Ormandy, Google Security Team. It fixes various bugs that can lead to denial-of-service conditions as well as to remote code execution while parsing a tiff image provided by an attacker.

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______________________________________________________________________________
SUSE Security Announcement
Package: libtiff
Announcement ID: SUSE-SA:2006:044
Date: Tue, 01 Aug 2006 17:00:00 +0000
Affected Products: SLE SDK 10
SUSE LINUX 10.1
SUSE LINUX 10.0
SUSE LINUX 9.3
SUSE LINUX 9.2
SuSE Linux Desktop 1.0
SuSE Linux Enterprise Server 8
SUSE SLES 10
SUSE SLES 9
UnitedLinux 1.0
Vulnerability Type: possible remote code execution
Severity (1-10): 8
SUSE Default Package: yes
Cross-References: CVE-2006-3459, CVE-2006-3460, CVE-2006-3461,
CVE-2006-3462, CVE-2006-3463, CVE-2006-3464,
CVE-2006-3465
Content of This Advisory:
1) Security Vulnerability Resolved:
fixed heap- and integer-overflows
Problem Description
2) Solution or Work-Around
3) Special Instructions and Notes
4) Package Location and Checksums
5) Pending Vulnerabilities, Solutions, and Work-Arounds:
6) Authenticity Verification and Additional Information
______________________________________________________________________________
1) Problem Description and Brief Discussion
This update of libtiff is the result of a source-code audit done by
Tavis Ormandy, Google Security Team. It fixes various bugs that can
lead to denial-of-service conditions as well as to remote code execution
while parsing a tiff image provided by an attacker.
2) Solution or Work-Around
No work-around known.
3) Special Instructions and Notes
Please restart all applications using libtiff. Desktop users should logout
and re-login.
On server systems you have to restart all server applications manually.
4) Package Location and Checksums
The preferred method for installing security updates is to use the YaST
Online Update (YOU) tool. YOU detects which updates are required and
automatically performs the necessary steps to verify and install them.
Alternatively, download the update packages for your distribution manually
and verify their integrity by the methods listed in Section 6 of this
announcement. Then install the packages using the command
rpm -Fhv <file.rpm>
to apply the update, replacing <file.rpm> with the filename of the
downloaded RPM package.
x86 Platform:
SUSE LINUX 10.1:
ftp://ftp.suse.com/pub/suse/update/10.1/rpm/i586/libtiff-3.8.2-5.9.i586.rpm
cee78f3b8393e87212f6c7eee1f1352f
ftp://ftp.suse.com/pub/suse/update/10.1/rpm/i586/libtiff-devel-3.8.2-5.9.i586.rpm
29374ea1d07be6b3c19828622fc8d85d
SUSE LINUX 10.0:
ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/i586/libtiff-3.7.3-2.6.i586.rpm
c48675b2ee56aedbe4d14ae756343883
ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/i586/libtiff-devel-3.7.3-2.6.i586.rpm
a19043509104bbdf56e208c44533fd17
SUSE LINUX 9.3:
ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/i586/libtiff-3.7.1-7.8.i586.rpm
a9302f4fcd3b68edcbf6fa65ee8442c3
ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/i586/libtiff-devel-3.7.1-7.8.i586.rpm
12d72bbfb69a3fdb99007570d1e085ad
SUSE LINUX 9.2:
ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/i586/libtiff-3.6.1-47.12.i586.rpm
7f20ea84b8c0f57b61d885c45111d6b5
ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/i586/libtiff-devel-3.6.1-47.12.i586.rpm
f36060a6d1979685ee7ca48e7b752a13
Power PC Platform:
SUSE LINUX 10.1:
ftp://ftp.suse.com/pub/suse/update/10.1/rpm/ppc/libtiff-3.8.2-5.9.ppc.rpm
854544b32d5b37295c74ccb50117696f
ftp://ftp.suse.com/pub/suse/update/10.1/rpm/ppc/libtiff-devel-3.8.2-5.9.ppc.rpm
133cb5b0ca0d416e9680f887c97ad755
SUSE LINUX 10.0:
ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/ppc/libtiff-3.7.3-2.6.ppc.rpm
99f01efad45f24e8d6d71d267cb8268c
ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/ppc/libtiff-devel-3.7.3-2.6.ppc.rpm
d7e48acc3fcb3c1ba3f4eb1f10ea1bee
x86-64 Platform:
SUSE LINUX 10.1:
ftp://ftp.suse.com/pub/suse/update/10.1/rpm/x86_64/libtiff-3.8.2-5.9.x86_64.rpm
1925947454d5a294eea0ae33f84e7a18
ftp://ftp.suse.com/pub/suse/update/10.1/rpm/x86_64/libtiff-32bit-3.8.2-5.9.x86_64.rpm
d5815aa12ff3a020e9db8217a968d413
ftp://ftp.suse.com/pub/suse/update/10.1/rpm/x86_64/libtiff-devel-3.8.2-5.9.x86_64.rpm
aef78c4623c541daffd9d7264481028d
ftp://ftp.suse.com/pub/suse/update/10.1/rpm/x86_64/libtiff-devel-32bit-3.8.2-5.9.x86_64.rpm
2310393005c3a73e8a07149febf55d0c
SUSE LINUX 10.0:
ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/x86_64/libtiff-3.7.3-2.6.x86_64.rpm
58b69feace7592ebe3d2cfb89145e23f
ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/x86_64/libtiff-32bit-3.7.3-2.6.x86_64.rpm
3eb152a3d6896290bb14ce2e282f7fa4
ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/x86_64/libtiff-devel-3.7.3-2.6.x86_64.rpm
01395b47c733b9e8624b1c16fb7d3da0
ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/x86_64/libtiff-devel-32bit-3.7.3-2.6.x86_64.rpm
06071d61873c07b51feec446cd708bb8
SUSE LINUX 9.3:
ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/x86_64/libtiff-3.7.1-7.8.x86_64.rpm
1c210504374ad6344a8a6e4f4d248707
ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/x86_64/libtiff-32bit-9.3-7.3.x86_64.rpm
86b90ea77293182e332ace686ae7d08e
ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/x86_64/libtiff-devel-3.7.1-7.8.x86_64.rpm
9f87e7aed1c3847bb74795e3f9180354
SUSE LINUX 9.2:
ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/x86_64/libtiff-3.6.1-47.12.x86_64.rpm
17a80e08f430667462d8c8dbda680671
ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/x86_64/libtiff-32bit-9.2-200607271428.x86_64.rpm
f11b621445853ca5e01a85dba0e86709
ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/x86_64/libtiff-devel-3.6.1-47.12.x86_64.rpm
63006aa37717b2e4151847e71e94b9ad
Our maintenance customers are notified individually. The packages are
offered for installation from the maintenance web:
http://support.novell.com/cgi-bin/search/searchtid.cgi?psdb/e25437fbc064183ed90d520bb8ab53f2.html
http://support.novell.com/cgi-bin/search/searchtid.cgi?psdb/af67a688fbb2e507784c8a1e9db46ab3.html
______________________________________________________________________________
5) Pending Vulnerabilities, Solutions, and Work-Arounds:
Please read the weekly summary report.
______________________________________________________________________________
6) Authenticity Verification and Additional Information
- Announcement authenticity verification:
SUSE security announcements are published via mailing lists and on Web
sites. The authenticity and integrity of a SUSE security announcement is
guaranteed by a cryptographic signature in each announcement. All SUSE
security announcements are published with a valid signature.
To verify the signature of the announcement, save it as text into a file
and run the command
gpg --verify <file>
replacing <file> with the name of the file where you saved the
announcement. The output for a valid signature looks like:
gpg: Signature made <DATE> using RSA key ID 3D25D3D9
gpg: Good signature from "SuSE Security Team <security@suse.de>"
where <DATE> is replaced by the date the document was signed.
If the security team's key is not contained in your key ring, you can
import it from the first installation CD. To import the key, use the
command
gpg --import gpg-pubkey-3d25d3d9-36e12d04.asc
- Package authenticity verification:
SUSE update packages are available on many mirror FTP servers all over the
world. While this service is considered valuable and important to the free
and open source software community, the authenticity and the integrity of
a package needs to be verified to ensure that it has not been tampered
with.
There are two verification methods that can be used independently from
each other to prove the authenticity of a downloaded file or RPM package:
1) Using the internal gpg signatures of the rpm package
2) MD5 checksums as provided in this announcement
1) The internal rpm package signatures provide an easy way to verify the
authenticity of an RPM package. Use the command
rpm -v --checksig <file.rpm>
to verify the signature of the package, replacing <file.rpm> with the
filename of the RPM package downloaded. The package is unmodified if it
contains a valid signature from build@suse.de with the key ID 9C800ACA.
This key is automatically imported into the RPM database (on
RPMv4-based distributions) and the gpg key ring of 'root' during
installation. You can also find it on the first installation CD and at
the end of this announcement.
2) If you need an alternative means of verification, use the md5sum
command to verify the authenticity of the packages. Execute the command
md5sum <filename.rpm>
after you downloaded the file from a SUSE FTP server or its mirrors.
Then compare the resulting md5sum with the one that is listed in the
SUSE security announcement. Because the announcement containing the
checksums is cryptographically signed (by security@suse.de), the
checksums show proof of the authenticity of the package if the
signature of the announcement is valid. Note that the md5 sums
published in the SUSE Security Announcements are valid for the
respective packages only. Newer versions of these packages cannot be
verified.
- SUSE runs two security mailing lists to which any interested party may
subscribe:
suse-security@suse.com
- General Linux and SUSE security discussion.
All SUSE security announcements are sent to this list.
To subscribe, send an e-mail to
<suse-security-subscribe@suse.com>.
suse-security-announce@suse.com
- SUSE's announce-only mailing list.
Only SUSE's security announcements are sent to this list.
To subscribe, send an e-mail to
<suse-security-announce-subscribe@suse.com>.
For general information or the frequently asked questions (FAQ),
send mail to <suse-security-info@suse.com> or
<suse-security-faq@suse.com>.
=====================================================================
SUSE's security contact is <security@suse.com> or <security@suse.de>.
The <security@suse.de> public key is listed below.
=====================================================================
______________________________________________________________________________
The information in this advisory may be distributed or reproduced,
provided that the advisory is not modified in any way. In particular, the
clear text signature should show proof of the authenticity of the text.
SUSE Linux Products GmbH provides no warranties of any kind whatsoever
with respect to the information contained in this security advisory.
Type Bits/KeyID Date User ID
pub 2048R/3D25D3D9 1999-03-06 SuSE Security Team <security@suse.de>
pub 1024D/9C800ACA 2000-10-19 SuSE Package Signing Key <build@suse.de>
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-
漏洞信息

-
漏洞描述

A local overflow exists in LibTIFF. The PixarLog decoder fails to validate TIFF image files resulting in a heap overflow. With a specially crafted file, an attacker can cause arbitrary code execution resulting in a loss of integrity.

-
时间线

公开日期:
2006-08-02

发现日期:
Unknow

利用日期:Unknow

解决日期:2006-03-23

-
解决方案

Upgrade to version 3.8.2 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.